Practicing Success
Restriction enzymes belong to a larger class of enzymes called nucleases. These are of two kinds; exonucleases and endonucleases. Exonucleases remove nucleotides from the ends of the DNA whereas, endonucleases make cuts at specific positions within the DNA. Each restriction endonuclease functions by ‘inspecting’ the length of a DNA sequence. Once it finds its specific recognition sequence, it will bind to the DNA and cut each of the two strands of the double helix at specific points in their sugar -phosphate backbones. Each restriction endonuclease recognises a specific nucleotide sequences in the DNA. |
Restriction endonucleases recognise: |
Palindromic nucleotide sequences in DNA Recombinant nucleotide sequence in RNA Recombinant nucleotide sequences in DNA Palindromic nucleotide sequences in RNA |
Palindromic nucleotide sequences in DNA |
The correct answer is Option () → |